Threat Level: green Handler on Duty: Didier Stevens

SANS ISC: HTTP Header Usage Statistics HTTP Header Usage Statistics


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This is a continuation of work started by Brough Davis as part of his software security project for his Masters in Information Security Engineering. The main goal of this project is to find how many sites use security relevant headers, like for example the X-XSS-Protection or X-Frame-Options headers.

Below you will find a table/histogram showing how many times we found each header (security relevant or not). We access the index page of each site using a "head" request. The list of sites is derived from Alexa's Top 1 Million sites. We try to poll as many sites as possible each day.

As we collect more data, we will plot changes over time.



All Headers Active In The Past Month
Header Popularity
Set-Cookie
Content-Type
Date
Connection
Server
Cache-Control
Vary
Expires
X-Frame-Options
Content-Length
Strict-Transport-Security
X-Content-Type-Options
Link
Last-Modified
Cf-Request-Id
CF-Cache-Status
ETag
Accept-Ranges
X-XSS-Protection
Expect-CT
Pragma
X-Powered-By
CF-RAY
X-Cache
Via
Age
Content-Security-Policy
Report-To
NEL
Access-Control-Allow-Origin
Referrer-Policy
Content-Language
X-Amz-Cf-Pop
X-Amz-Cf-Id
X-Cache-Hits
P3P
X-UA-Compatible
X-Served-By
X-Xss-Protection
X-Download-Options
CF-Ray
X-Timer
Access-Control-Allow-Headers
Access-Control-Allow-Methods
X-Varnish
X-Adblock-Key
X-Request-Id
Access-Control-Allow-Credentials
X-FRAME-OPTIONS
X-Permitted-Cross-Domain-Policies
X-Request-ID
X-AspNet-Version
Alt-Svc
X-Runtime
Content-Security-Policy-Report-Only
X-Drupal-Cache
X-DNS-Prefetch-Control
X-Check
X-Generator
X-Cache-Status
X-Cacheable
Timing-Allow-Origin
X-Envoy-Upstream-Service-Time
X-Iinfo
X-Content-Security-Policy
X-Drupal-Dynamic-Cache
Feature-Policy
Content-Encoding
Access-Control-Expose-Headers
Upgrade
Status
X-CDN
X-AspNetMvc-Version
Access-Control-Max-Age
X-Via
Server-Timing
Request-Context
X-Robots-Tag
X-Turbo-Charged-By
X-UA-Device
X-Amz-Request-Id
X-Cache-Group
EagleId
X-Amz-Id-2
X-Backend
P3p
X-AH-Environment
X-Proxy-Cache
Keep-Alive
X-Ua-Compatible
X-Dns-Prefetch-Control
X-Server
X-Ws-Request-Id
X-Age
Host-Header
Cf-Edge-Cache
X-Hacker
X-Vhost
X-Server-Powered-By
X-Rq
X-Varnish-Cache
X-Dispatcher
X-Amz-Version-Id
Grace
Allow
X-Swift-CacheTime
X-Swift-SaveTime
Ali-Swift-Global-Savetime
X-OneAgent-JS-Injection
X-LiteSpeed-Cache
X-Pantheon-Styx-Hostname
X-Styx-Req-Id
X-Page-Speed
Cf-Apo-Via
X-Device
X-WebKit-CSP
Cf-Railgun
Accept-CH
X-Aws-Lambda-Call-Status
X-Node
X-Pingback
X-Host
X-Ruxit-JS-Agent
X-Server-Id
EagleEye-TraceId
X-Nginx-Cache-Status
Surrogate-Control
X-Akam-SW-Version
X-Readtime
X-Backend-Server
Request-Id
X-Cache-Spec
X-Cache-Lookup
X-HW
X-Content-Security-Policy-Report-Only
Accept-Ch-Lifetime
X-EdgeConnect-Origin-MEX-Latency
X-EdgeConnect-MidMile-RTT
X-Cloud-Trace-Context
X-Trace
X-Application-Context
X-Response-Time
Permissions-Policy
X-Nginx-Upstream-Cache-Status
Fastly-Restarts
X-Edge
X-Mod-Pagespeed
X-WebKit-CSP-Report-Only
X-Country
X-Mcache
X-Content-Type
Content-Location
X-MS-InvokeApp
X-Url
Accept-CH-Lifetime
X-CST
X-Clacks-Overhead
X-PC
X-TtlSet
X-Vname
X-Midtier
X-Amz-Server-Side-Encryption
X-Litespeed-Cache
Rating
RTSS
Cache-Tag
X-Vcap-Request-Id
X-ESI
X-D2id
X-Element-Page-Cache
X-Exp-Variant
X-Exp-Id
X-Cdn-Fetch
Origin-Trial
X-GoogleNews-Bot
X-Kinja-Build
X-Use-Magma
X-Kinja-Server
X-Kinja-Revision
X-VARITI-CCR
X-Kinja
Verso
X-Rack-Cache
X-Server-Name
X-Ac
X-GitHub-Request-Id
X-Powered-By-Plesk
Service-Worker-Allowed
X-Cnection
X-ECACHE
X-Amz-Rid
SPRequestGuid
X-SharePointHealthScore
X-Client-IP
X-Navigation-Version
X-Ttl
Xkey
X-Abt-Application-Version
Edge-Control
SPIisLatency
SPRequestDuration
X-Cache-TTL
X-NWS-LOG-UUID
X-Upstream
X-B3-TraceId
Arr-Disable-Session-Affinity
X-Webkit-Csp
X-Cached
X-Server-Lifecycle-Phase
X-Browser-Type
X-Erf-Bev-Bev
X-Instrumentation
X-Erf-Bev-Bev-Is-Generated
X-Kraken-Loop-Name
X-Mg-S
X-Dw-Request-Base-Id
X-Varnish-TTL
X-Px
Accept-Ch
Display
X-Sol
X-Middleton-Display
Pagespeed
X-Cache-Key
X-SRCache-Store-Status
X-FastCGI-Cache
X-SRCache-Fetch-Status
X-NF-Request-ID
X-Correlation-Id
Edge-Cache-Tag
Access-Control-Request-Method
X-Forwarded-For
X-Country-Code
Content-MD5
X-Goog-Hash
X-Powered-CMS
Front-End-Https
AR-CACHE
AR-PoweredBy
AR-Request-ID
AR-SID
AR-ATIME
X-Id
X-Version
X-Ratelimit-Limit
TCN
Public-Key-Pins
X-RateLimit-Remaining
X-Jurisdiction
X-HP-Webp
X-HP-Trace-Id
X-T
X-Content-Digest
X-Ser
X-Recruiting
X-MSEdge-Ref
X-Amzn-Trace-Id
Response
X-Middleton-Response
X-Accel-Expires
X-Daa-Tunnel
TP-Cache
TP-L2-Cache
X-Shield-Request-Id
X-XRDS-Location
MicrosoftSharePointTeamServices
Nginx-Cache
S
Cache-Status
X-HS-Combine-CSS
X-HS-Cache-Config
X-HS-Content-Id
X-HS-Hub-Id
X-Request-Processing-Time
X-Request-Received
Mrf-Cache-Status
X-B3-TraceId-Primal
MRF-Tech
Server-Node
X-Fastcgi-Cache
Cache-Tags
X-Distributor
X-Hits
X-PressLabs-Stats
X-TEC-API-ORIGIN
X-TEC-API-VERSION
X-TEC-API-ROOT
Cross-Origin-Opener-Policy
X-Edge-Location-Klb
X-Kinsta-Cache
X-LB-Cache
X-Origin-Server
X-Ratelimit-Remaining
X-Ratelimit-Reset
Fastcgi-Cache
X-Ua-Browser
X-Ezoic-Cdn
X-ORACLE-DMS-ECID
Alternate-Protocol
X-ORACLE-DMS-RID
X-Grace
Server-Name
Filterid
X-DIS-Request-ID
X-Microsite
X-Request-Handler-Origin-Region
X-Frontend
X-LLID
X-Protected-By
X-Rid
X-Geo-Country
Healthy
X-Fastly-Request-ID
X-FB-Debug
X-Git-Hash
X-Logged-In
Cleartype
X-Varnish-Backend
Payment
X-Debug-Info
X-Page-Id
X-Forwarded-Proto
X-Load-Cache
X-Www-Served-By
X-Hostname
X-NGENIX-Cache
X-Cluster-Name
X-ASPNET-VERSION
DC
X-DataDome
X-ECache
MS-Author-Via
X-Origin-Cache
Realpath
Content-Disposition
Access-Control-Allow-Method
X-B3-Sampled
X-TTL
Charset
X-Upgrade-Enabled
X-Goog-Metageneration
X-GUploader-UploadID
X-Kong-Proxy-Latency
X-Kong-Upstream-Latency
X-Proxy
X-AppVersion
X-Activity-Id
X-Az
X-B3-Traceid
X-F-Cache
X-Seen-By
X-Amz-Replication-Status
X-Amz-Meta-S3cmd-Attrs
Retry-After
Paypal-Debug-Id
X-Azure-Ref
X-Fb-Rlafr
X-Server-ID
X-Cache-Age
X-Whom
Cross-Origin-Resource-Policy
Surrogate-Key
Viewport
X-Request-Guid
X-Aspnet-Duration-Ms
X-Providence-Cookie
X-Is-Crawler
X-Flags
X-Type
X-Route-Name
Count-Hit
X-Wix-Request-Id
X-App-Environment
X-Varnish-Server
X-B
X-Revision
X-Aspnetmvc-Version
X-Hosted-By
X-Contextid
X-VCache
X-Akamai-Edgescape
X-B-Cache
X-Signature
Accept-Charset
X-TT
X-DynaTrace
X-Language
Amp-Access-Control-Allow-Source-Origin
X-Times
X-Source
X-App-Server
X-Cache-Control
X-Fastly-Request-Id
Referer-Policy
X-Mobile
X-Goog-Generation
X-Goog-Stored-Content-Encoding
X-Goog-Stored-Content-Length
X-Goog-Storage-Class
X-Varnish-Grace
X-Magnolia-Registration
X-Envoy-Decorator-Operation
Host
Version
X-Varnish-Ttl
X-HTML-Minification-Powered-By
X-N
X-Cache-Rule
X-Oracle-Dms-Ecid
X-Oracle-Dms-Rid
X-Tumblr-Pixel
X-Tumblr-Pixel-0
X-Tumblr-User
X-Varnish-Age
X-Tumblr-Pixel-1
X-Response-Served-From
X-Tt-Trace-Host
Refresh
X-Original-Request-Id
WPO-Cache-Status
X-Tt-Trace-Tag
WPO-Cache-Message
Access-Control-Request-Headers
X-Cache-Time
X-RTag
MS-CV
X-Cache-Status-Check
X-Rule
Ms-Operation-Id
X-Cache-Grace
X-UUID
X-User-Agent
X-EdgeConnect-Cache-Status
X-Framework
SD-X-WS
X-Status
X-ProcessESI
X-RemovedCookies
X-Jobs
X-Page-View
Protected
X-Cacheable-TTL
X-FW-Static
X-FW-Dynamic
X-Content-Powered-By
X-Backend-Name
X-FW-Hash
X-FW-Serve
X-FW-Type
Section-Io-Cache
X-FW-Server
X-FW-Version
Akamai-GRN
X-Device-Type
From-Origin
X-Drupal-Cache-Tags
X-G
X-Is-Bot
X-Rendered-As
X-XRDS-LOCATION
Url
GEO-INFO
X-Http-Reason
X-Akamai-Request-ID2
X-Drupal-Cache-Contexts
X-NYM-Debug-Backend
X-Instance
X-Servername
X-L-Path
X-Cache-Expired-At
X-Environment-Context
X-Amzn-RequestId
X-Amz-Apigw-Id
NGB
X-Adobe-Content
X-Region
VIX-Pulpo-Node
VIX-Pulpo-Upstream-Status
X-Adobe-Loc
CDN-RequestId
X-Trace-Id
SRV
X-Nginx-Cache
Front
X-Template
X-Debug-IsPreview
Accept-Language
X-CDN-Forward
X-Debug-IsConnected
X-Unique-Id
X-RateLimit-Limit
X-Content-Options
X-Yottaa-Optimizations
X-Cache-Hit
X-Yottaa-Metrics
Fastly-SWR
Fastly-SIE
Backend
X-Zen-Fury
Liferay-Portal
Country
X-Newrelic-App-Data
X-Air-Source
X-Air-Trace-Id
X-Air-Hostname
X-DynaTrace-JS-Agent
Pinterest-Version
X-Mode
X-Pinterest-Rid
Pinterest-Generated-By
X-COUNTRY
X-Tb
Content-Secure-Policy
X-Cache-Operation
X-Real-IP
Webserver
X-UPSTREAM-Address
X-Tumblr-Pixel-2
X-Proxy-Cache-Info
Filters
X-Generation-Time
Meta-Geo
X-RN-RSRV
X-Cache-Server
S-Rt
X-Content-Age
X-Amzn-Remapped-Content-Length
X-Rewrite-Enabled
Onion-Location
X-Rocket-Nginx-Serving-Static
X-Proxy-Build
X-PHP-Backend
X-Locale
X-Web-Node
Selected-Fe
CF-IPCountry
Cache-Hits
X-Timing-Wait
X-Node-Name
X-Time
Uber-Trace-Id
X-IPS-LoggedIn
Webcakes-Region
X-Forwarded-Host
X-Sucuri-Cache
TWC-Locale-Group
Property-Id
X-Access
Node
X-Debug
TWC-Privacy
Webcakes-App-Name
X-Sucuri-ID
X-Format
TWC-GeoIP-LatLong
Azure-InstanceId
X-Edge-Location
TWC-Connection-Speed
X-Section
Azure-RegionName
Cache-Name
Azure-Version
X-Server-W
Azure-SlotName
Azure-SiteName
X-UA-Device-Type
TWC-Device-Class
X-Ms-Version
X-Ms-Request-Id
X-Sql-Count
X-Sql-Duration-Ms
X-Proto
X-Skip-Cache
X-R9-Blue-Green-Version
Webcakes-App-Version
X-Origin-Hint
TWC-GeoIP-Country
X-Site-Version
ServerID
ServedBy
Web-Mar-Node
X-PHP-Host
X-Varnish-Beresp-Grace
X-Reqid
X-VC-Cache
X-Via-Fastly
X-Zipkin-Id
X-ProxyCache-Status
X-Soup
X-ProxyCache-Key
X-Ua
X-Proxied
X-Routing-Service
X-Cache-Action
X-Cache-Host
X-Handled-By
X-Say-Cacheable
X-Cms-Context
X-Cluster-Node
X-Cache-TTL-Remaining
X-Say-TTL
X-SayCDN-TTL
X-Labrador-Cache-Channel
X-Origin-Date
X-Proxy-Cache-Status
X-Tumblr-Pixel-3
X-BYPASS-REASON
X-Extlb
X-Uri
X-Tt-Logid
X-TIME
X-LAGOON
X-Adobe-Source
X-AWS-Id
X-IPLB-Request-ID
X-JoinUs
X-FB-TRIP-ID
X-IPLB-Instance
X-SaId
X-VWS-Id
X-Detected-As
X-Cluster
X-LJ-Flow-ID
DB-Nickname
Mn-Server-Ip
Cross-Origin-Window-Policy
X-Ruxit-Js-Agent
Countrycode
X-Xfnlog-Site
X-App-Version
X-Urbn-Site-Id
X-No-Session
X-Optimistic-Header
X-Urbn-Context-Path
Locale
Fastcgi-Useragent
X-ARC
WP-Super-Cache
X-LSADC-Cache
Apigw-Requestid
X-GeoCountry
Mime-Version
X-GeoCode
X-WP-CF-Super-Cache
X-WP-CF-Super-Cache-Cache-Control
X-Buckets
Cache-Tv-Group
X-Director
X-Oneagent-Js-Injection
Source
CDN-CachedAt
CDN-Uid
CDN-RequestCountryCode
CDN-PullZone
CDN-EdgeStorageId
CDN-Cache
X-Varnish-Hits
X-Hl-Ver
Upgrade-Insecure-Requests
X-Mg-Request-UUID
X-Request-Time
X-GEO
X-Generated-By
X-Tec-Api-Version
X-Tec-Api-Root
X-Tec-Api-Origin
X-Redis-Cache
X-Cache-Debug
X-Loop
Frame-Options
X-FireWall-Port
Fastly-Drupal-HTML
Xet-Cookie
CF-Cached-On
X-TA-CDN-Provider
X-URL
X-Origin-TTL
X-Origin-CC
X-Tx-Id
X-SRV
X-Varnish-Cache-Hits
X-Pass-Why
X-RM-Cache-TTL
X-Varnish-Hostname
X-Shopify-Stage
X-ShardId
X-ShopId
X-Api-Version
X-Sorting-Hat-ShopId
X-Sorting-Hat-PodId
X-Storefront-Renderer-Rendered
X-Alternate-Cache-Key
X-TNCMS
X-ServerID
X-Datadog-Parent-Id
X-Datadog-Sampling-Priority
Load-Balancing
X-Datadog-Sampled
X-Datadog-Trace-Id
X-Akamai-Transformed
X-Served-From
X-Service
X-Newrelic-Synthetics
X-Endurance-Cache-Level
X-Request-Host
X-Pubstack
Server-Info
X-Location
X-A
Xserver
X-Hash
WWW-Authenticate
A
X-Generated-On
X-A-Ccd
X-Bc-Bl
X-Gdpr
X-Bip
X-Cache-Date
X-A-Dgt
X-Destination
X-Developer
X-Httpd
X-Aed
X-D
X-Application
X-Core-Mission
X-Conf
X-CMSURLCustom
X-A-Wwc
X-A-Dcw
X-A-Dam
X-B-Cookie
X-External-Request-Id
X-Cdn-Origin
X-Ec-Fail
X-Ec-GeoHdr
X-Cache-NE
Surrogated-Key
X-S
X-Rojux
X-S-Cookie
X-S-Maxage
X-ScT
Country-Code
Gannett-Cam-Experience-Id
Memcached
Meta-Geo-Continent
X-Vdms-Path
MD5-Digest
X-Processor
DCR-Decision-By
DCR-Processing-Time-Ms
X-TIM-N
X-SVT-ORM-RULES
X-SVT-ORM-VERSION
X-Test
X-Thanos
X-SRCache-Key
X-Sn-Servicetimems
Lang
Host-ID
Edge-Cache
DSUID
X-Thinkindot-L3
Ngx.Var.Host
TDXMobile
X-Mid
X-Mobile-URL
T-Server
X-BCube-Filmed-By
BehaviorPad-Version
X-Level-Front-Cache
X-INCAP-ABP
Thinkindot-Control
Thinkindot-CacheControl-Type
Thinkindot-CacheControl
Sslversion
X-Vdms-Version
X-We-Are-Hiring
Release
Redirect-Candidate
Origin
X-Origin-Time
Odigeo-Trace-Id
Candidate-Md5Url
Xc-Version
X-Nyt-Route
Rendered-Blocks
X-Storage
X-CSRF-Token
X-BBC-Edge-Cache-Status
X-Accel-Expires-Debug
We-Hiring
Req-Svc-Chain
Mail-Subject
Magicmarker
Gh-Request-Id
X-Auto-Login
X-Fmm-Version
X-WADP-Cache
X-Origin-Response-Time
X-VServer
X-Vmg-Version
X-Platform-Cluster
X-Worker
X-WP-CF-Super-Cache-Active
NM-Fastcgi-Cache
X-Mvc-Supplant-Cachable
X-Node-Id
X-Org
X-Platform-Processor
X-Platform-Router
X-Slack-Backend
X-Sigma-Backend
X-Slack-Shared-Secret-Outcome
X-Var-Ttl
X-Varnishpool
X-Sigma
X-Server-IP
X-Region-Sid
X-Restarts
X-Rocket-Build-Number
X-SD-PageType
Fastly-Backend-Name
Server-Host
X-Dispatcher-Number
X-Developers
X-Epic-Correlation-Id
X-Fastly-Backend
X-Fastly-Cache
X-Date
X-CUA
X-Cache-Info
X-CacheTTL
X-Cdn-Srv
X-Clara-WADP
X-Fetched-On
X-Men
X-Is-Gdpr
X-Human
X-JWT-State
X-Akamai-Device-Characteristics
X-Loc
X-HS-Content-Campaign-Id
X-Has-Esi
X-Gamma-Serve
X-Geo-Header
X-GeoIP
X-GeoIP-City
X-Origin
X-Cache-Bucket
Cache-Key
Section-Io-Origin-Time-Seconds
Section-Io-Origin-Status
Section-Io-Id
X-B3-Spanid
CloudFront-Viewer-Country
Cache-Host
C-Via
AKAMAI
Section-Origin-Responded
CacheControlHeader
X-Parent-Response-Time
X-WA-Info
X-Varnish-CookieINHashed-On
X-Varnish-Remaining-TTL
X-Block-Status
X-Cache-Tags
X-Origin-Expires
X-VarnishDD-TTL
Adler-Geo
Wxu-Next-Commit
Wxu-Next-Hostname
Web-Mar-Region
Apple-News-Services-Handled
User-Cache-Control
Wxu-Next-Region
X-Ad-Defer-Variation
X-App
X-Varnish-CookieHashed-On
Is-Eu
X-Accel-Buffering
Platform
X-Azure-Ref-OriginShield
X-DefElseHash
X-GeoIP-Country-Code
X-GeoIP-Region-Code
X-Scale
X-Pool
X-Gen-Mode
X-HN
X-Hnp-Log
X-Nginx-Cache-Key
X-NCache
X-Irp-Debug
X-Variation
X-Op-Id-All
X-Qloud-Router
X-Req
X-DefHash
X-Device-Os
Tube-Return
X-NWS-UUID-VERIFY
X-Varnish-Beresp-Status
X-Ec-Custom-Error
X-FC-Vary-Parameters
X-Request-Start
X-Frame-Option
X-Forwarded-Site
X-Platform
X-Core-Value
X-Wix-Viewer-Type
X-Cache-Id
Server-Hostname
Server-Ext
PFcat
Sever-Int
Fastly-GeoIP-CountryCode
X-Esi-Check
Machine
NGX
X-Dispatcher-Server
CDCHOST
Canary
Cmsid
Datacenter
Cmstype
Ssr
Cache-Provider
Apple-News-Services-Parsed-Url
Apple-News-Services-Request-Url
Origin-EX
Apple-News-Services-Host
Click-Count-Error
Tube-Got-Eval
Tube-Get-Contents
X-Instance-Name
On-Server
Click-Count-Action-Start
State
X-Gzip
Tube-Got-Results
Origin-CC
X-Varnish-Beresp-Ttl
X-CGP
X-Planisys-CDN-TTL
X-Ckpd-Fst-Backend
X-Eu-Site
X-DPWN-IS-SECURE
X-Provided-By
X-Csrf-Jwt
Producers
X-Planisys-CDN-Rules
X-Planisys-CDN-Cache
X-Minions-Version
X-Response-By
X-NodeID
Ha-Gx-Prefs
X-Platform-Server
X-Cache-FS-Status
Vix-Hermes-Req-Id
X-LB-NoCache
X-V-Cache
X-Old-Content-Length
X-SB
X-Mly-Id
X-Release
X-Cache-Remote
X-VG-TLSProxy
X-Owner
L5d-Success-Class
L
HA-Ipaddr
Kp-EeAlive
Environment
X-Webkit-CSP-Report-Only
X-CACHE-AGE
HostName
X-Air-Pt
Decoy-Debug-Status
X-FL-QIT-DEBUG
X-Refresh
Decoy-Debug-Key
X-Tb-Optimization-Total-Bytes-Saved
Decoy-Debug-TTL
Fastly-SSL
X-Aicache-OS
X-Cache-Backend
X-Ua-Device
X-FL-EDGE
Srvid
X-Nananana
Expect-Staple
Pics-Label
Locid
Cluster
X-Mvc-Supplant-OutputCached
X-Via-CDN
X-Tid
X-Dc
X-Microcachable
X-Correlation-ID
X-Via-Edge
X-Vcl-Version
X-Via-SSL
Edge-Copy-Time
X-Cache-Enabled
X-RCS-CacheZone
X-From
X-Zone
X-ND-Cache
Env
GeoIP-Latitude
X-VC
X-DC
X-Trace-ID
Sid
Memory
X-Up
Time
NtCoent-Length
X-Debug-Cache-Store
X-Debug-Cache-Fetch
X-Cached-By
X-Lambda-Id
Fastly-Drupal-Html
X-Servedbyhost
X-Generated-In
X-Edge-Pop
Svr
Cache
X-Webkit-CSP
X-Cs
X-DataCenter
X-ZONE
X-Via-Poph
X-Via-Popv
SID
X-Via-Popn
X-Srv
X-HS-Status
X-AIR-PT
X-NewRelic-App-Data
X-Render-Time
X-Esi
CPC-Age
AMP-Access-Control-Allow-Source-Origin
X-Presslabs-Stats
CPC-Cache
X-VCT
VNS-Cache
VNS-Age
X-Vtex-Remote-Cache
X-Nc
X-HA-Backend
X-Vc
X-LB-ID
X-CCDN-Origin-Time
X-Hcs-Proxy-Type
X-CLOUD-TRACE-CONTEXT
GeoIp-Country-Code
X-Vgn-Hpd-Cached
X-Vgn-Hpd-Variations-Key
X-Vgn-Hpd-Ssi
X-Wa
X-CCDN-CacheTTL
X-Client-Ip
Cdn
X-Upstream-Ct
X-TH-Server
Server-ID
X-Upstream-Ht
X-Check-Cacheable
X-Cache-Type
X-B3-SpanId
Cdnsip
X-Gateway-Request-Id
X-Gateway-Cache-Status
True-Client-IP
X-Gateway-Skip-Cache
Cdncip
X-ATG-Version
Hostname
X-Via-JSL
X-Amz-Meta-Cb-Modifiedtime
X-AK-Request-ID
X-Gateway-Cache-Key
XkeyRZ
X-Proxy-CacheRZ
X-Fpc
X-Cache-ASPX
X-Contensis-Viewer-Groups
Uri
X-Varnish-Authentication
X-Varnish-Beresp-TTL
X-Via-NSCOPI
X-NGINX-Cache
XServer
X-API-Version
M-TraceId
X-Nf-Request-Id
X-Datadome
X-EC-Lua
X-CS
X-CSRF-TOKEN
Esi-Enabled
Eomportal-Instance
X-CF-Lambda-Fn
X-FPC
X-RateLimit-Remaining-Second
X-CF-Lambda-Version
X-RateLimit-Limit-Second
Srv
X-Udemy-Cache-App-Namespace
X-PAYTM-SRV-ID
X-MSEdge-Flight
Resin-Trace
X-MSEdge-Features
CDN
True-Client-Ip
X-MP-GENERATED-AT
X-Micro-Cache
X-Wikidot-Static-Cache
N-Cache
OT-Force-Account-Verify
X-CDN-Cache-Status
Ngx-Var-Key
X-Wikidot-Backend
YJS-ID
Request-ID
X-Fastly-Country-Code
RNT-Time
Path
X-Orig-Expires
X-Forwarded-Path
X-Bl-Debug
X-Shop-Environment
X-Tenant
RNT-Machine
Lb
X-APP-VERSION
X-SIPLIST1
X-TX-ID
X-Cache-Ttl
IsBot
X-Cache-NGX
X-Request-URI
Server-Id
GeoIP-Country-Code
X-CACHE-KEY
X-WA
X-Info
X-Ha-Backend
X-B3-Trace-ID
X-Policy
X-App-Name
X-Accel-Version
X-Lb-Id
X-VCL-Version
X-Service-Response-Time
Sm-Log-Id
X-Datacenter
X-MCACHE
X-RateLimit-Reset
Location
Cross-Origin-Opener-Policy-Report-Only
X-NC
X-Edge-POP
LB
X-Pod-Name
X-Cdn-Cache-Status
Hit
HIT
RATING
X-SERVER-NAME
Ohc-File-Size
X-Via-PopV
X-Via-PopH
X-Via-PopN
X-Geo
X-Akamai-Pragma-Client-IP
X-Logging-Id
X-Oss-Object-Type
Timeexpire
X-Cdn-Request-ID
X-Cache-Expires
X-Oss-Server-Time
X-ServedByHost
X-Oss-Request-Id
X-Oss-Storage-Class
X-Srcache-Store-Status
X-Cdn-Diag
Pramga
Servername
X-Snapshot-Date
X-Srcache-Fetch-Status
FSS-Cache
X-Oss-Hash-Crc64ecma
Tcn
X-Cdn-Forward
Yjs-Id
Epwk-X-Cache
Proxy-Connection
Req-ID
Geoip-Latitude
X-Ctl-Mach
ENV
X-Git-Commit
X-Container-Uri
X-Vcache
X-HostName
X-Tncms
XM
X-Wp-Cf-Super-Cache-Cache-Control
X-Wp-Cf-Super-Cache
X-Hyper-Cache
X-Amz-Meta-Opti
X-TT-LOGID
X-LiteSpeed-Cache-Control
X-Scheme
X-Fastly-Backend-Reqs
X-Dw-Trace-Id
X-Serial
WZWS-RAY
X-UP
X-M-Reqid
Warning
X-M-Log
X-Iauth-Set-Uid
X-Rebelmouse-Cache-Control
X-MiniProfiler-Ids
X-Rebelmouse-Surrogate-Control
X-Qnm-Cache
Traceparent
X-B3-Parentspanid
X-Acquia-Site
CDN-RequestPullCode
CDN-RequestPullSuccess
V-Age
X-Acquia-Purge-Cdn-Unconfigured
Ec-Rule-Version
X-VG-WebCache
X-Acquia-Application-UUID
X-Acquia-Purge-Tags
X-RAMCache
X-Swift-Error
X-Acquia-Application-Trace
X-Moov-Xdn-Version
Content-Style-Type
Content-Script-Type
X-Lb-Nocache
Cneonction
X-TraceId
X-Moov-T
X-Lsadc-Cache
X-F-Status
CountryCode
X-LiteSpeed-Tag
X-Th-Server
X-Mg-Cache
X-Mid-Debug-Cache-Disk
Ngx
X-Mid-Debug-Cache-Key
X-Clientip
X-Litespeed-Cache-Control
Ohc-Cache-HIT
True-Client-Country-4JS
X-B3-ParentSpanId
X-Viewer-Country
Inserted-Into-Cache-At
X-ApacheServer
X-IPS-Cached-Response
MIME-Version
X-Fastly-Cache-Hits
X-PERF
X-Webstats-RespID
X-Cache-Ngx
My-App
X-Request-URL